Operational Optimization of Water Distribution Systems using a Hybrid Genetic Algorithm

Genetic algorithm (GA) optimization is well suited for optimizing the operation of water distribution systems, especially large and complex systems. GAs have good initial convergence characteristics, but slow down considerably once the region of optimal solution has been identified. In this study the efficiency of GA operational optimization was improved through a hybrid method which combines the GA method with a hillclimber search strategy. Hillclimber strategies complement GAs by being efficient in finding a local optimum. Two hillclimber strategies, the Hooke and Jeeves and Fibonacci methods, were investigated. The hybrid method proved to be superior to the pure GA in finding a good solution quickly, both when applied to a test problem and to a large existing water distribution system.

[1]  Godfrey A. Walters,et al.  Multiobjective Genetic Algorithms for Pump Scheduling in Water Supply , 1997, Evolutionary Computing, AISB Workshop.

[2]  David E. Goldberg,et al.  Genetic Algorithms in Search Optimization and Machine Learning , 1988 .

[3]  Lindell Ormsbee,et al.  Computer-generated pumping schedules for satisfying operational objectives , 1993 .

[4]  P. W. Jowitt,et al.  Real-time forecasting and control for water distribution , 1988 .

[5]  G. Yu,et al.  Optimized pump scheduling in water distribution systems , 1994 .

[6]  Carlos León,et al.  EXPLORE—Hybrid Expert System for Water Networks Management , 2000 .

[7]  K. Dejong,et al.  An analysis of the behavior of a class of genetic adaptive systems , 1975 .

[8]  M. Likeman Constraint satisfaction methods in water supply scheduling , 1994 .

[9]  Godfrey A. Walters,et al.  Application of genetic algorithms to pump scheduling for water supply , 1995 .

[10]  David E. Goldberg,et al.  Genetic Algorithms in Pipeline Optimization , 1987 .

[11]  David Knight,et al.  Using optimisation for integrated water network management , 1991 .

[12]  M. M. Makela,et al.  Evolutionary Algorithms in Engineering and Computer Science: Recent Advances in Genetic Algorithms, Evolution Strategies, Evolutionary Programming, Genetic Programming and Industrial Applications , 1999 .

[13]  L. NONLINEAR HEURISTIC FOR PUMP OPERATIONS , 1996 .

[14]  Kevin E Lansey,et al.  Optimal Pump Operations Considering Pump Switches , 1994 .

[15]  Paul F. Boulos,et al.  OPTIMAL PUMP OPERATION OF WATER DISTRIBUTION SYSTEMS USING GENETIC ALGORITHMS , 2001 .

[16]  David E. Goldberg,et al.  Optimizing Global-Local Search Hybrids , 1999, GECCO.

[17]  Elaine C. Sadowski,et al.  Optimization of Water Supply System Operation , 1996 .

[18]  M. A. Brdys,et al.  Operational Control of Water Systems: Structures, Algorithms, and Applications , 1994 .

[19]  Dragan Savic,et al.  Genetic Algorithms for Least-Cost Design of Water Distribution Networks , 1997 .

[20]  Julia Race,et al.  An Overview of the Trunk Scheduling System for the London Ring Main , 1993 .

[21]  Paul Jowitt,et al.  Optimal Pump Scheduling in Water‐Supply Networks , 1992 .